I want to install either rdiff or unison or duplicity in order to have incremental off-site backups. Each of these ports fails when python24 fails to build with the following error message at the mac os x command line: Warning: the following items did not execute (for python24): com.apple.activate com.apple.build com.apple.destroot com.apple.install Error: The following dependencies failed to build: python24 Error: Status 1 encountered during processing. Above this message are approx. 220 lines which mostly include 'Python/ mactoolboxglue.c:456: warning: return makes integer from pointer without a cast'. I'm guessing that the problem is something to do with the commands used when trying to build python24 but I've too little understanding of unix, the command line, python and compilers to make sense of the appropriate lines. The first two lines of output concerning python are: ---> Building python24 with target all /usr/bin/gcc-4.0 -c -fno-strict-aliasing -Wno-long-double -no-cpp- precomp -mno-fused-madd -fno-common -fno-common -dynamic -DNDEBUG -g - O3 -Wall -Wstrict-prototypes -I/opt/local/include -I. -I./Include - DPy_BUILD_CORE -o Python/mactoolboxglue.o Python/mactoolboxglue.c I've googled to no avail and consulted the list archives for a solution. Any help appreciated, Stuart Imac G5 mac os x 10.4.9 xcode 2.4.1